NEON SCATTERING OFF SODIUM CLUSTERS AT FINITE TEMPERATURES

We present findings from computer simulations of collisions of neon at omic beams with Na-20 atomic clusters at different internal temperatur es. A functional form for the double differential cross section is det ermined, and no simple signature of a phase transition is seen, even t hough the clusters undergo a melting phase transition in the temperatu re range investigated (100 K - 400 K). However, such experiments can b e used effectively to measure the internal cluster temperature.